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|
$LOAD_PATH.unshift(File.expand_path("../../lib", __FILE__))
require 'benchmark'
require 'rspec/support/caller_filter'
n = 10000
puts "#{n} times - ruby #{RUBY_VERSION}"
puts
puts "* Using a chunked fetch is quicker than the old method of array-access."
Benchmark.bm(20) do |bm|
bm.report("CallerFilter") do
n.times do
RSpec::CallerFilter.first_non_rspec_line
end
end
bm.report("Direct caller access") do
n.times do
caller(1)[4]
end
end
end
puts
puts "* Chunking fetches of caller adds a ~17% overhead."
Benchmark.bm(20) do |bm|
bm.report("Chunked") do
n.times do
caller(1, 2)
caller(3, 2)
caller(5, 2)
end
end
bm.report("All at once") do
n.times do
caller(1, 6)
end
end
end
puts
puts "* `caller` scales linearly with length parameter."
Benchmark.bm(20) do |bm|
(1..10).each do |x|
bm.report(x) do
n.times do
caller(1, x)
end
end
end
end
# > ruby benchmarks/caller.rb
# 10000 times - ruby 2.0.0
#
# * Using a chunked fetch is quicker than the old method of array-access.
# user system total real
# CallerFilter 0.140000 0.010000 0.150000 ( 0.145381)
# Direct caller access 0.170000 0.000000 0.170000 ( 0.180610)
#
# * Chunking fetches of caller adds a ~17% overhead.
# user system total real
# Chunked 0.150000 0.000000 0.150000 ( 0.181162)
# All at once 0.130000 0.010000 0.140000 ( 0.138732)
#
# * `caller` scales linearly with length parameter.
# user system total real
# 1 0.030000 0.000000 0.030000 ( 0.035000)
# 2 0.050000 0.000000 0.050000 ( 0.059879)
# 3 0.080000 0.000000 0.080000 ( 0.098468)
# 4 0.090000 0.010000 0.100000 ( 0.097619)
# 5 0.110000 0.000000 0.110000 ( 0.126220)
# 6 0.130000 0.000000 0.130000 ( 0.136739)
# 7 0.150000 0.000000 0.150000 ( 0.159055)
# 8 0.160000 0.010000 0.170000 ( 0.172416)
# 9 0.180000 0.000000 0.180000 ( 0.203038)
# 10 0.200000 0.000000 0.200000 ( 0.210551)
|
